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  • Asp.Net MVC EnableClientValidation doesnt work.

    - by Farrell
    I want as well as Client Side Validation as Server Side Validation. I realized this as the following: Model: ( The model has a DataModel(dbml) which contains the Test class ) namespace MyProject.TestProject { [MetadataType(typeof(TestMetaData))] public partial class Test { } public class TestMetaData { [Required(ErrorMessage="Please enter a name.")] [StringLength(50)] public string Name { get; set; } } } Controller is nothing special. The View: <% Html.EnableClientValidation(); %> <% using (Ajax.BeginForm("Index", "Test", FormMethod.Post, new AjaxOptions {}, new { enctype = "multipart/form-data" })) {%> <%= Html.AntiForgeryToken()%> <fieldset> <legend>Widget Omschrijving</legend> <div> <%= Html.LabelFor(Model => Model.Name) %> <%= Html.TextBoxFor(Model => Model.Name) %> <%= Html.ValidationMessageFor(Model => Model.Name) %> </div> </fieldset> <div> <input type="submit" value="Save" /> </div> <% } %> To make this all work I added also references to js files: <script src="../../Scripts/MicrosoftAjax.js" type="text/javascript"></script> <script src="../../Scripts/MicrosoftMvcAjax.js" type="text/javascript"></script> <script src="../../Scripts/MicrosoftMvcValidation.js" type="text/javascript"></script> <script src="../../Scripts/jquery-1.4.1.min.js" type="text/javascript"></script> Eventually it has to work, but it doesnt work 100%: It does validates with no page refresh after pressing the button. It also does "half" Client Side Validation. Only when you type some text into the textbox and then backspace the typed text. The Client Side Validation appears. But when I try this by tapping between controls there's no Client Side Validation. Do I miss some reference or something? (I use Asp.Net MVC 2 RTM)

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  • How to decrypt a string in C# that was encrypted in Delphi

    - by Simon Linder
    Hi all, we have a project written in Delphi that we want to convert to C#. Problem is that we have some passwords and settings that are encrypted and written into the registry. When we need a specified password we get it from the registry and decrypt it so we can use it. For the conversion into C# we have to do it the same way so that the application can also be used by users that have the old version and want to upgrade it. Here is the code we use to encrypt/decrypt strings in Delphi: unit uCrypt; interface function EncryptString(strPlaintext, strPassword : String) : String; function DecryptString(strEncryptedText, strPassword : String) : String; implementation uses DCPcrypt2, DCPblockciphers, DCPdes, DCPmd5; const CRYPT_KEY = '1q2w3e4r5t6z7u8'; function EncryptString(strPlaintext) : String; var cipher : TDCP_3des; strEncryptedText : String; begin if strPlaintext <> '' then begin try cipher := TDCP_3des.Create(nil); try cipher.InitStr(CRYPT_KEY, TDCP_md5); strEncryptedText := cipher.EncryptString(strPlaintext); finally cipher.Free; end; except strEncryptedText := ''; end; end; Result := strEncryptedText; end; function DecryptString(strEncryptedText) : String; var cipher : TDCP_3des; strDecryptedText : String; begin if strEncryptedText <> '' then begin try cipher := TDCP_3des.Create(nil); try cipher.InitStr(CRYPT_KEY, TDCP_md5); strDecryptedText := cipher.DecryptString(strEncryptedText); finally cipher.Free; end; except strDecryptedText := ''; end; end; Result := strDecryptedText; end; end. So for example when we want to encrypt the string asdf1234 we get the result WcOb/iKo4g8=. We now want to decrypt that string in C#. Here is what we tried to do: public static void Main(string[] args) { string Encrypted = "WcOb/iKo4g8="; string Password = "1q2w3e4r5t6z7u8"; string DecryptedString = DecryptString(Encrypted, Password); } public static string DecryptString(string Message, string Passphrase) { byte[] Results; System.Text.UTF8Encoding UTF8 = new System.Text.UTF8Encoding(); // Step 1. We hash the passphrase using MD5 // We use the MD5 hash generator as the result is a 128 bit byte array // which is a valid length for the TripleDES encoder we use below MD5CryptoServiceProvider HashProvider = new MD5CryptoServiceProvider(); byte[] TDESKey = HashProvider.ComputeHash(UTF8.GetBytes(Passphrase)); // Step 2. Create a new TripleDESCryptoServiceProvider object TripleDESCryptoServiceProvider TDESAlgorithm = new TripleDESCryptoServiceProvider(); // Step 3. Setup the decoder TDESAlgorithm.Key = TDESKey; TDESAlgorithm.Mode = CipherMode.ECB; TDESAlgorithm.Padding = PaddingMode.None; // Step 4. Convert the input string to a byte[] byte[] DataToDecrypt = Convert.FromBase64String(Message); // Step 5. Attempt to decrypt the string try { ICryptoTransform Decryptor = TDESAlgorithm.CreateDecryptor(); Results = Decryptor.TransformFinalBlock(DataToDecrypt, 0, DataToDecrypt.Length); } finally { // Clear the TripleDes and Hashprovider services of any sensitive information TDESAlgorithm.Clear(); HashProvider.Clear(); } // Step 6. Return the decrypted string in UTF8 format return UTF8.GetString(Results); } Well the result differs from the expected result. After we call DecryptString() we expect to get asdf1234but we get something else. Does anyone have an idea of how to decrypt that correctly? Thanks in advance Simon

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  • Why is ListBoxFor not selecting items, but ListBox is?

    - by Roger Rogers
    I have the following code in my view: <%= Html.ListBoxFor(c => c.Project.Categories, new MultiSelectList(Model.Categories, "Id", "Name", new List<int> { 1, 2 }))%> <%= Html.ListBox("MultiSelectList", new MultiSelectList(Model.Categories, "Id", "Name", new List<int> { 1, 2 }))%> The only difference is that the first helper is strongly typed (ListBoxFor), and it fails to show the selected items (1,2), even though the items appear in the list, etc. The simpler ListBox is working as expected. I'm obviously missing something here. I can use the second approach, but this is really bugging me and I'd like to figure it out. For reference, my model is: public class ProjectEditModel { public Project Project { get; set; } public IEnumerable<Project> Projects { get; set; } public IEnumerable<Client> Clients { get; set; } public IEnumerable<Category> Categories { get; set; } public IEnumerable<Tag> Tags { get; set; } public ProjectSlide SelectedSlide { get; set; } } Update I just changed the ListBox name to Project.Categories (matching my model) and it now FAILS to select the item. <%= Html.ListBox("Project.Categories", new MultiSelectList(Model.Categories, "Id", "Name", new List<int> { 1, 2 }))%> I'm obviously not understanding the magic that is happening here. Update 2 Ok, this is purely naming, for example, this works... <%= Html.ListBox("Project_Tags", new MultiSelectList(Model.Tags, "Id", "Name", Model.Project.Tags.Select(t => t.Id)))%> ...because the field name is Project_Tags, not Project.Tags, in fact, anything other than Tags or Project.Tags will work. I don't get why this would cause a problem (other than that it matches the entity name), and I'm not good enough at this to be able to dig in and find out.

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  • Add animation when user control get visible and collapsed In Wpf

    - by sanjeev40084
    I have two xaml files MainWindow.xaml and other user control WorkDetail.xaml file. MainWindow.xaml file has a textbox, button, listbox and reference to WorkDetail.xaml(user control which is collapsed). Whenever user enter any text, it gets added in listbox when the add button is clicked. When any items from the listbox is double clicked, the visibility of WorkDetail.xaml is set to Visible and it gets displayed. In WorkDetail.xaml (user control) it has textblock and button. The Textblock displays the text of selected item and close button sets the visibility of WorkDetail window to collapsed. Now i am trying to animate WorkDetail.xaml when it gets visible and collapse. When any items from listbox is double clicked and WorkDetail.xaml visibility is set to visible, i want to create an animation of moving WorkDetail.xaml window from right to left on MainWindow. When Close button from WorkDetail.xaml file is clicked and WorkDetail.xaml file is collapsed, i want to slide the WorkDetail.xaml file from left to right from MainWindow. Here is the screenshot: MainWindow.xaml code: <Window...> <Grid Background="Black" > <TextBox x:Name="enteredWork" Height="39" Margin="44,48,49,0" TextWrapping="Wrap" VerticalAlignment="Top"/> <ListBox x:Name="workListBox" Margin="26,155,38,45" FontSize="29.333" MouseDoubleClick="workListBox_MouseDoubleClick"/> <Button x:Name="addWork" Content="Add" Height="34" Margin="71,103,120,0" VerticalAlignment="Top" Click="Button_Click"/> <TestWpf:WorkDetail x:Name="WorkDetail" Visibility="Collapsed"/> </Grid> </Window> MainWindow.xaml.cs class code: namespace TestWpf { public partial class MainWindow : Window { public MainWindow() { this.InitializeComponent(); } private void Button_Click(object sender, RoutedEventArgs e) { workListBox.Items.Add(enteredWork.Text); } private void workListBox_MouseDoubleClick(object sender, MouseButtonEventArgs e) { WorkDetail.workTextBlk.Text = (string)workListBox.SelectedItem; WorkDetail.Visibility = Visibility.Visible; } } } WorkDetail.xaml code: <UserControl ..> <Grid Background="#FFD2CFCF"> <TextBlock x:Name="workTextBlk" Height="154" Margin="33,50,49,0" TextWrapping="Wrap" VerticalAlignment="Top" FontSize="29.333" Background="#FFF13939"/> <Button x:Name="btnClose" Content="Close" Height="62" Margin="70,0,94,87" VerticalAlignment="Bottom" Click="btnClose_Click"/> </Grid> </UserControl> WorkDetail.xaml.cs class code: namespace TestWpf { public partial class WorkDetail : UserControl { public WorkDetail() { this.InitializeComponent(); } private void btnClose_Click(object sender, System.Windows.RoutedEventArgs e) { Visibility = Visibility.Collapsed; } } } Can anyone tell how can i do this?

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  • CSS3 Gradients to reproduce an 'inner glow' effect from Illustrator with border-radius applied

    - by iamfriendly
    Hello all! First post on here so please be kind :) I am in the process of trying to get my head properly around CSS3 Gradients (specifically radial ones) and in doing so I think I've set myself a relatively tough challenge. In Adobe Illustrator I have created a 'button' style which can be seen here: http://bit.ly/aePPtV (jpg image). To create this image I created a rectangle with a background colour of rgb(63,64,63) or #3F403F, then 'stylized' it to have a 15px border radius. I then applied an 'inner glow' to it with a 25% opacity, 8px blur, white from the center. Finally, I applied a 3pt white stroke on it. (I'm telling you all of this in case you wished to reproduce it, if the image above isn't sufficient.) So, my question is thus: is it possible to recreate this 'button' using CSS without the need for an image? I am aware of the 'limitations' of Internet Explorer (and for the sake of this experiment, I couldn't give a monkeys). I am also aware of the small 'bug' in webkit which incorrectly renders an element with a background colour, border-radius and a border (with a different color to the background-color) - it lets the background color bleed through on the curved corners. My best attempt so far is fairly pathetic, but for reference here is the code: section#featured footer p a { color: rgb(255,255,255); text-shadow: 1px 1px 1px rgba(0,0,0,0.6); text-decoration: none; padding: 5px 10px; border-radius: 15px; -moz-border-radius: 15px; -webkit-border-radius: 15px; border: 3px solid rgb(255,255,255); background: rgb(98,99,100); background: -moz-radial-gradient( 50% 50%, farthest-side, #626364, #545454 ); background: -webkit-gradient( radial, 50% 50%, 1px, 50% 50%, 5px, from(rgb(98,99,100)), to(rgb(84,84,84)) ); } Basically, terrible. Any hints or tips gratefully accepted and thank you very much in advance for them!

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  • Prevent recursive CTE visiting nodes multiple times

    - by bacar
    Consider the following simple DAG: 1->2->3->4 And a table, #bar, describing this (I'm using SQL Server 2005): parent_id child_id 1 2 2 3 3 4 //... other edges, not connected to the subgraph above Now imagine that I have some other arbitrary criteria that select the first and last edges, i.e. 1-2 and 3-4. I want to use these to find the rest of my graph. I can write a recursive CTE as follows (I'm using terminology from MSDN): with foo(parent_id,child_id) as ( // anchor member that happens to select first and last edges: select parent_id,child_id from #bar where parent_id in (1,3) union all // recursive member: select #bar.* from #bar join foo on #bar.parent_id = foo.child_id ) select parent_id,child_id from foo However, this results in edge 3-4 being selected twice: parent_id child_id 1 2 3 4 2 3 3 4 // 2nd appearance! How can I prevent the query from recursing into subgraphs that have already been described? I could achieve this if, in my "recursive member" part of the query, I could reference all data that has been retrieved by the recursive CTE so far (and supply a predicate indicating in the recursive member excluding nodes already visited). However, I think I can access data that was returned by the last iteration of the recursive member only. This will not scale well when there is a lot of such repetition. Is there a way of preventing this unnecessary additional recursion? Note that I could use "select distinct" in the last line of my statement to achieve the desired results, but this seems to be applied after all the (repeated) recursion is done, so I don't think this is an ideal solution. Edit - hainstech suggests stopping recursion by adding a predicate to exclude recursing down paths that were explicitly in the starting set, i.e. recurse only where foo.child_id not in (1,3). That works for the case above only because it simple - all the repeated sections begin within the anchor set of nodes. It doesn't solve the general case where they may not be. e.g., consider adding edges 1-4 and 4-5 to the above set. Edge 4-5 will be captured twice, even with the suggested predicate. :(

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  • Word Spell Check pops up hidden and "freezes" my App

    - by Refracted Paladin
    I am using Word's Spell Check in my in house WinForm app. My clients are all XP machines with Office 2007 and randomly the spell check suggestion box pops up behind the App and makes everything "appear" frozen as you cannot get at it. Suggestions? What do other people do to work around this or stop it altogether? Thanks Below is my code, for reference, though I am doubtful that this has anything to do with my code but I'll take anything. public class SpellCheckers { public string CheckSpelling(string text) { Word.Application app = new Word.Application(); object nullobj = Missing.Value; object template = Missing.Value; object newTemplate = Missing.Value; object documentType = Missing.Value; object visible = false; object optional = Missing.Value; object savechanges = false; app.ShowMe(); Word._Document doc = app.Documents.Add(ref template, ref newTemplate, ref documentType, ref visible); doc.Words.First.InsertBefore(text); Word.ProofreadingErrors errors = doc.SpellingErrors; var ecount = errors.Count; doc.CheckSpelling(ref optional, ref optional, ref optional, ref optional, ref optional, ref optional, ref optional, ref optional, ref optional, ref optional, ref optional, ref optional); object first = 0; object last = doc.Characters.Count - 1; var results = doc.Range(ref first, ref last).Text; doc.Close(ref savechanges, ref nullobj, ref nullobj); app.Quit(ref savechanges, ref nullobj, ref nullobj); Marshal.ReleaseComObject(doc); Marshal.ReleaseComObject(app); Marshal.ReleaseComObject(errors); return results; } } And I call it from my WinForm app like so -- public static void SpellCheckControl(Control control) { if (IsWord2007Available()) { if (control.HasChildren) { foreach (Control ctrl in control.Controls) { SpellCheckControl(ctrl); } } if (IsValidSpellCheckControl(control)) { if (control.Text != String.Empty) { control.BackColor = Color.FromArgb(180, 215, 195); control.Text = Spelling.CheckSpelling(control.Text); control.Text = control.Text.Replace("\r", "\r\n"); control.ResetBackColor(); } } } }

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  • Login failed for user 'DOMAIN\MACHINENAME$'

    - by sah302
    I know this is almost duplicate of : http://stackoverflow.com/questions/1269706/the-error-login-failed-for-user-nt-authority-iusr-in-asp-net-and-sql-server-2 and http://stackoverflow.com/questions/97594/login-failed-for-user-username-system-data-sqlclient-sqlexception-with-linq-i but some things don't add up compared to other appliations on my server and I am not sure why. Boxes being used: Web Box SQL Box SQL Test Box My Application: I've got aASP.NET Web Application, which references a class library that uses LINQ-to-SQL. Connection string set up properly in the class library. As per http://stackoverflow.com/questions/97594/login-failed-for-user-username-system-data-sqlclient-sqlexception-with-linq-i I also added this connection string to the Web Application. The connection string uses SQL credentials as so (in both web app and class library): <add name="Namespace.My.MySettings.ConnectionStringProduction" connectionString="Data Source=(SQL Test Box);Initial Catalog=(db name);Persist Security Info=True;User ID=ID;Password=Password" providerName="System.Data.SqlClient" /> This connection confirmed as working via adding it to server explorer. This is the connection string my .dbml file is using. The problem: I get the following error: System.Data.SqlClient.SqlException: Login failed for user 'DOMAIN\MACHINENAME$'. Now referencing this http://stackoverflow.com/questions/1269706/the-error-login-failed-for-user-nt-authority-iusr-in-asp-net-and-sql-server-2 it says that's really the local network service and using any other non-domain name will not work. But I am confused because I've checked both SQL Box and SQL Test Box SQL Management Studio and both have NT AUTHORITY/NETWORK SERVICE under Security - Logins, at the database level, that isn't listed under Security - Users, but at the database level Security - Users I have the user displayed in the connection string. At NTFS level on web server, the permissions have NETWORK SERVICE has full control. The reason why I am confused is because I have many other web applications on my Web Server, that reference databases on both SQL Box and SQL Test Box, and they all work. But I cannot find a difference between them and my current application, other than I am using a class library. Will that matter? Checking NTFS permissions, setup of Security Logins at the server and databases levels, connection string and method of connecting (SQL Server credentials), and IIS application pool and other folder options, are all the same. Why do these applications work without adding the machinename$ to the permissions of either of my SQL boxes? But that is what the one link is telling me to do to fix this problem.

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  • .Net Intermittent System.Web.Services.Protocols.SoapHeaderException

    - by ScottE
    We have a .net 3.5 web app that consumes third party web services. The proxy was created by adding a web reference to their wsdl. This proxy is not compiled. Our error logging is picking up frequent but intermittent exceptions: An exception of type 'System.Web.Services.Protocols.SoapHeaderException' occurred and was caught If I follow the url to the page that generated the exception, I can't recreate it. Edit: Here is most of the exception - where it bubbled up from Message : Internal Error Type : System.Web.Services.Protocols.SoapHeaderException, System.Web.Services, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a Source : System.Web.Services Help link : Actor : Code : http://schemas.xmlsoap.org/soap/envelope/:Client Detail : Lang : Node : Role : SubCode : Data : System.Collections.ListDictionaryInternal TargetSite : System.Object[] ReadResponse(System.Web.Services.Protocols.SoapClientMessage, System.Net.WebResponse, System.IO.Stream, Boolean) Stack Trace : at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall) at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters) at Vendor.getSearch(getSearchRequest getSearchRequest) in c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\root\be43c34e\b09edc7e\App_WebReferences.pww-cf-q.0.cs:line 73 Edit 2: Inner exceptions: I sometimes get the following inner exceptions logged: Message : Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. Type : System.IO.IOException, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 Source : System Help link : Data : System.Collections.ListDictionaryInternal TargetSite : Int32 Read(Byte[], Int32, Int32) Stack Trace : at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size) at System.Net.FixedSizeReader.ReadPacket(Byte[] buffer, Int32 offset, Int32 count) at System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocolRequest asyncRequest) at System.Net.Security.SslState.CheckCompletionBeforeNextReceive(ProtocolToken message, AsyncProtocolRequest asyncRequest) at System.Net.Security.SslState.StartSendBlob(Byte[] incoming, Int32 count, AsyncProtocolRequest asyncRequest) at System.Net.Security.SslState.ForceAuthentication(Boolean receiveFirst, Byte[] buffer, AsyncProtocolRequest asyncRequest) at System.Net.Security.SslState.ProcessAuthentication(LazyAsyncResult lazyResult) at System.Net.TlsStream.CallProcessAuthentication(Object state) at System.Threading.ExecutionContext.runTryCode(Object userData) at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData) at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Net.TlsStream.ProcessAuthentication(LazyAsyncResult result) at System.Net.TlsStream.Write(Byte[] buffer, Int32 offset, Int32 size) at System.Net.PooledStream.Write(Byte[] buffer, Int32 offset, Int32 size) at System.Net.ConnectStream.WriteHeaders(Boolean async) And/Or: Message : An existing connection was forcibly closed by the remote host Type : System.Net.Sockets.SocketException, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 Source : System Help link : ErrorCode : 10054 SocketErrorCode : ConnectionReset NativeErrorCode : 10054 Data : System.Collections.ListDictionaryInternal TargetSite : Int32 Receive(Byte[], Int32, Int32, System.Net.Sockets.SocketFlags) Stack Trace : at System.Net.Sockets.Socket.Receive(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags) at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size) Update We're still working on it. Originally there was a route issue, which was resolved. We're still getting the inner exception with socket errors. We had MS support involved today, and they looked at some traces and network captures. The web service host does round-robin DNS, and they may be responding on a different IP address for the syn syn/ack from one ip, and the next from a different ip. This is not good. This is likely quite specific to our situation, but perhaps it applies to others as well. Microsoft Network Monitor and an application trace got us the information we needed.

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  • Debugging XSLT with extension objects in Visual Studio 2010

    - by Alex Ciminian
    I'm currently working on a project that involves a lot of XSLT transformations and I really need a debugger (I have XSLTs that are 1000+ lines long and I didn't write them :-). The project is written in C# and makes use of extension objects: xslArg.AddExtensionObject("urn:<obj>", new <Obj>()); From my knowledge, in this situation Visual Studio is the only tool that can help me debug the transformations step-by-step. The static debugger is no use because of the extension objects (it throws an error when it reaches elements that reference their namespace). Fortunately, I've found this thread which gave me a starting point (at least I know it can be done). After searching MSDN, I found the criteria that makes stepping into the transform possible. They are listed here. In short: the XML and the XSLT must be loaded via a class that has the IXmlLineInfo interface (XmlReader & co.) the XML resolver used in the XSLTCompiledTransform constructor is file-based (XmlUriResolver should work). the stylesheet should be on the local machine or on the intranet (?) From what I can tell, I fit all these criteria, but it still doesn't work. The relevant code samples are posted below: // [...] xslTransform = new XslCompiledTransform(true); xslTransform.Load(XmlReader.Create(new StringReader(contents)), null, new BaseUriXmlResolver(xslLocalPath)); // [...] // I already had the xml loaded in an xmlDocument // so I have to convert to an XmlReader XmlTextReader r = new XmlTextReader(new StringReader(xmlDoc.OuterXml)); XsltArgumentList xslArg = new XsltArgumentList(); xslArg.AddExtensionObject("urn:[...]", new [...]()); xslTransform.Transform(r, xslArg, context.Response.Output); I really don't get what I'm doing wrong. I've checked the interfaces on both XmlReader objects and they implement the required one. Also, BaseUriXmlResolver inherits from XmlUriResolver and the stylesheet is stored locally. The screenshot below is what I get when stepping into the Transform function. First I can see the stylesheet code after stepping through the parameters (on template-match), I get this: If anyone has any idea why it doesn't work or has an alternative way of getting it to work I'd be much obliged :). Thanks, Alex

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  • ensime scala errors (class scala.Array not found, object scala not found)

    - by Jeff Bowman
    I've installed ensime according to the README.md file, however, I get errors in the inferior-ensime-server buffer with the following: INFO: Fatal Error: scala.tools.nsc.MissingRequirementError: object scala not found. scala.tools.nsc.MissingRequirementError: object scala not found. at scala.tools.nsc.symtab.Definitions$definitions$.getModuleOrClass(Definitions.scala:516) at scala.tools.nsc.symtab.Definitions$definitions$.ScalaPackage(Definitions.scala:43) at scala.tools.nsc.symtab.Definitions$definitions$.ScalaPackageClass(Definitions.scala:44) at scala.tools.nsc.symtab.Definitions$definitions$.UnitClass(Definitions.scala:89) at scala.tools.nsc.symtab.Definitions$definitions$.init(Definitions.scala:786) at scala.tools.nsc.Global$Run.(Global.scala:593) at scala.tools.nsc.interactive.Global$TyperRun.(Global.scala:473) at scala.tools.nsc.interactive.Global.newTyperRun(Global.scala:535) at scala.tools.nsc.interactive.Global.reloadSources(Global.scala:289) at scala.tools.nsc.interactive.Global$$anonfun$reload$1.apply(Global.scala:300) at scala.tools.nsc.interactive.Global$$anonfun$reload$1.apply(Global.scala:300) at scala.tools.nsc.interactive.Global.respond(Global.scala:276) at scala.tools.nsc.interactive.Global.reload(Global.scala:300) at scala.tools.nsc.interactive.CompilerControl$$anon$1.apply$mcV$sp(CompilerControl.scala:81) at scala.tools.nsc.interactive.Global.pollForWork(Global.scala:132) at scala.tools.nsc.interactive.Global$$anon$2.run(Global.scala:192) also: INFO: Fatal Error: scala.tools.nsc.MissingRequirementError: class scala.Array not found. scala.tools.nsc.MissingRequirementError: class scala.Array not found. at scala.tools.nsc.symtab.Definitions$definitions$.getModuleOrClass(Definitions.scala:516) at scala.tools.nsc.symtab.Definitions$definitions$.getClass(Definitions.scala:474) at scala.tools.nsc.symtab.Definitions$definitions$.ArrayClass(Definitions.scala:217) at scala.tools.nsc.backend.icode.TypeKinds$REFERENCE.(TypeKinds.scala:258) at scala.tools.nsc.backend.icode.GenICode$ICodePhase.(GenICode.scala:55) at scala.tools.nsc.backend.icode.GenICode.newPhase(GenICode.scala:43) at scala.tools.nsc.backend.icode.GenICode.newPhase(GenICode.scala:25) at scala.tools.nsc.Global$Run$$anonfun$4.apply(Global.scala:606) at scala.tools.nsc.Global$Run$$anonfun$4.apply(Global.scala:605) at scala.collection.LinearSeqOptimized$class.foreach(LinearSeqOptimized.scala:62) at scala.collection.immutable.List.foreach(List.scala:46) at scala.tools.nsc.Global$Run.(Global.scala:605) at scala.tools.nsc.interactive.Global$TyperRun.(Global.scala:473) at scala.tools.nsc.interactive.Global.newTyperRun(Global.scala:535) at scala.tools.nsc.interactive.Global.reloadSources(Global.scala:289) at scala.tools.nsc.interactive.Global.typedTreeAt(Global.scala:309) at scala.tools.nsc.interactive.Global$$anonfun$getTypedTreeAt$1.apply(Global.scala:326) at scala.tools.nsc.interactive.Global$$anonfun$getTypedTreeAt$1.apply(Global.scala:326) at scala.tools.nsc.interactive.Global.respond(Global.scala:276) at scala.tools.nsc.interactive.Global.getTypedTreeAt(Global.scala:326) at scala.tools.nsc.interactive.CompilerControl$$anon$2.apply$mcV$sp(CompilerControl.scala:89) at scala.tools.nsc.interactive.Global.pollForWork(Global.scala:132) at scala.tools.nsc.interactive.Global$$anon$2.run(Global.scala:192) Also none of the type identification works for me, I get 'NA' if I get anything at all. C-c t causes emacs to lock up. I'm running: Ubuntu 10.04 (64bit version) emacs 23.1.50.1 ensime from git (as of 3 May 2010) scala is version 2.8.0.RC1 java is 1.6.0_20 (from sun) here is a copy of the log: http://dl.dropbox.com/u/5309017/ensime.log Thanks! Jeff

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  • Compare NSArray with NSMutableArray adding delta objects to NSMutableArray

    - by Hooligancat
    I have an NSMutableArray that is populated with objects of strings. For simplicity sake we'll say that the objects are a person and each person object contains information about that person. Thus I would have an NSMutableArray that is populated with person objects: person.firstName person.lastName person.age person.height And so on. The initial source of data comes from a web server and is populated when my application loads and completes it's initialization with the server. Periodically my application polls the server for the latest list of names. Currently I am creating an NSArray of the result set, emptying the NSMutableArray and then re-populating the NSMutableArray with NSArray results before destroying the NSArray object. This seems inefficient to me on a few levels and also presents me with a problem losing table row references which I can work around, but might be creating more work for myself in doing so. The inefficiency seems to be that I should be able to compare the two arrays and end up with a filtered NSArray. I could then add the filtered set to the NSMutableArray. This would mean that I can simply append new data to the NSMutableArray instead of throwing everything out and re-populating. Conversely I would need to do the same filter in reverse to see if there are records that need removing from the NSMutableArray. Is there any method to do this in a more efficient manner? Have I overlooked something in the docs some place that refers to a simpler technique? I have a problem when I empty the NSMutableArray and re-populate in that any referencing tables lose their selected row state. I can track it and re-select it, but my theory is that using some form of compare and adding objects and removing objects instead of dealing with the whole array in one block might mean I keep my row reference (assuming the item isn't deleted of course). Any suggestions or help much appreciated. Update Would it be just as fast to do a fast enumeration over each comparing each line item as I go? It seems like an expensive operation, but with the last fast enumeration code it might be pretty efficient...

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  • The model item passed into the dictionary is of type 'System.Collections.Generic.Lis

    - by mazhar
    Calling Index view is giving me this very very annoying error . Can anybody tell me what to do about it Error: The model item passed into the dictionary is of type 'System.Collections.Generic.List1[MvcApplication13.Models.Groups]', but this dictionary requires a model item of type 'MvcApplication13.Helpers.PaginatedList1[MvcApplication13.Models.Groups]'. public ActionResult Index(int? page) { const int pageSize = 10; var group =from p in _db.Groups orderby p.int_GroupId select p; var paginatedGroup = group.Skip((page ?? 0) * pageSize).Take(pageSize).ToList(); return View(paginatedGroup); } View: <%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage" % Index <h2>Index</h2> <table> <tr> <th></th> <th> int_GroupId </th> <th> vcr_GroupName </th> <th> txt_GroupDescription </th> <th> bit_Is_Deletable </th> <th> bit_Active </th> <th> int_CreatedBy </th> <th> dtm_CreatedDate </th> <th> int_ModifiedBy </th> <th> dtm_ModifiedDate </th> </tr> <% foreach (var item in Model) { %> <tr> <td> <%= Html.ActionLink("Edit", "Edit", new { id=item.int_GroupId }) %> | <%= Html.ActionLink("Details", "Details", new { id=item.int_GroupId })%> | <%= Html.ActionLink("Delete", "Delete", new { id=item.int_GroupId })%> </td> <td> <%= Html.Encode(item.int_GroupId) %> </td> <td> <%= Html.Encode(item.vcr_GroupName) %> </td> <td> <%= Html.Encode(item.txt_GroupDescription) %> </td> <td> <%= Html.Encode(item.bit_Is_Deletable) %> </td> <td> <%= Html.Encode(item.bit_Active) %> </td> <td> <%= Html.Encode(item.int_CreatedBy) %> </td> <td> <%= Html.Encode(String.Format("{0:g}", item.dtm_CreatedDate)) %> </td> <td> <%= Html.Encode(item.int_ModifiedBy) %> </td> <td> <%= Html.Encode(String.Format("{0:g}", item.dtm_ModifiedDate)) %> </td> </tr> <% } %> </table> <% if (Model.HasPreviousPage) { % <%= Html.RouteLink("<<<", "UpcomingDinners", new { page = (Model.PageIndex-1) }) % <% } % <% if (Model.HasNextPage) { % <%= Html.RouteLink("", "UpcomingDinners", new { page = (Model.PageIndex + 1) }) % <% } % <p> <%= Html.ActionLink("Create New", "Create") %> </p>

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  • qwebview in pyside after packaged with pyinstaller goes wrong

    - by truease.com
    Here's my code import sys from PySide.QtCore import * from PySide.QtGui import * from PySide.QtWebKit import * from encodings import * from codecs import * class BrowserWindow( QWidget ): def __init__( self, parent=None ): QWidget.__init__( self, parent ) self.Setup() self.SetupEvent() def Setup( self ): self.setWindowTitle( u"Truease Speedy Browser" ) self.addr_input = QLineEdit() self.addr_go = QPushButton( "GO" ) self.addr_bar = QHBoxLayout() self.addr_bar.addWidget( self.addr_input ) self.addr_bar.addWidget( self.addr_go ) for attr in [ QWebSettings.AutoLoadImages, QWebSettings.JavascriptEnabled, QWebSettings.JavaEnabled, QWebSettings.PluginsEnabled, QWebSettings.JavascriptCanOpenWindows, QWebSettings.JavascriptCanAccessClipboard, QWebSettings.DeveloperExtrasEnabled, QWebSettings.SpatialNavigationEnabled, QWebSettings.OfflineStorageDatabaseEnabled, QWebSettings.OfflineWebApplicationCacheEnabled, QWebSettings.LocalStorageEnabled, QWebSettings.LocalStorageDatabaseEnabled, QWebSettings.LocalContentCanAccessRemoteUrls, QWebSettings.LocalContentCanAccessFileUrls, ]: QWebSettings.globalSettings().setAttribute( attr, True ) self.web_view = QWebView() self.web_view.load( "http://www.baidu.com" ) layout = QVBoxLayout() layout.addLayout( self.addr_bar ) layout.addWidget( self.web_view ) self.setLayout( layout ) def SetupEvent( self ): self.connect( self.addr_input, SIGNAL("editingFinished()"), self, SLOT("Load()"), ) self.connect( self.addr_go, SIGNAL("pressed()"), self, SLOT("Load()") ) self.connect( self.web_view, SIGNAL("urlChanged(const QUrl&)"), self, SLOT("SetURL()"), ) def Load( self, *args, **kwargs ): url = self.GetCleanedURL() if url != self.CurrentURL(): self.web_view.load( url ) def SetURL( self, *args, **kwargs ): self.addr_input.setText( self.CurrentURL() ) def GetCleanedURL( self ): url = self.addr_input.text().strip() if not url.startswith("http"): url = "http://" + url return url def CurrentURL( self ): url = self.web_view.url().toString() return url def Main(): app = QApplication( sys.argv ) widget = BrowserWindow() widget.show() return app.exec_() if __name__ == '__main__': sys.exit( Main() ) I works well when i using python browser.py. but it goes wrong after packaged with pyinstaller -w browser.py. it doesn't load images can only display correct text in utf-8 And this is the pyinstaller output: E:\true\wuk\app2>pyinstaller -w b.py 16 INFO: wrote E:\true\wuk\app2\b.spec 16 INFO: Testing for ability to set icons, version resources... 32 INFO: ... resource update available 32 INFO: UPX is not available. 46 INFO: Processing hook hook-os 141 INFO: Processing hook hook-time 157 INFO: Processing hook hook-cPickle 218 INFO: Processing hook hook-_sre 312 INFO: Processing hook hook-cStringIO 407 INFO: Processing hook hook-encodings 421 INFO: Processing hook hook-codecs 750 INFO: Processing hook hook-httplib 750 INFO: Processing hook hook-email 843 INFO: Processing hook hook-email.message 1046 WARNING: library python%s%s required via ctypes not found 1171 INFO: Extending PYTHONPATH with E:\true\wuk\app2 1171 INFO: checking Analysis 1171 INFO: building because b.py changed 1171 INFO: running Analysis out00-Analysis.toc 1171 INFO: Adding Microsoft.VC90.CRT to dependent assemblies of final executable 1171 INFO: Searching for assembly x86_Microsoft.VC90.CRT_1fc8b3b9a1e18e3b_9.0.21022.8_x-ww ... 1171 INFO: Found manifest C:\WINDOWS\WinSxS\Manifests\x86_Microsoft.VC90.CRT_1fc8b3b9a1e18e3b_9.0.21022.8_x-ww_d08d0375.manifest 1187 INFO: Searching for file msvcr90.dll 1187 INFO: Found file C:\WINDOWS\WinSxS\x86_Microsoft.VC90.CRT_1fc8b3b9a1e18e3b_9.0.21022.8_x-ww_d08d0375\msvcr90.dll 1187 INFO: Searching for file msvcp90.dll 1187 INFO: Found file C:\WINDOWS\WinSxS\x86_Microsoft.VC90.CRT_1fc8b3b9a1e18e3b_9.0.21022.8_x-ww_d08d0375\msvcp90.dll 1187 INFO: Searching for file msvcm90.dll 1187 INFO: Found file C:\WINDOWS\WinSxS\x86_Microsoft.VC90.CRT_1fc8b3b9a1e18e3b_9.0.21022.8_x-ww_d08d0375\msvcm90.dll 1266 INFO: Analyzing D:\Applications\Python\lib\site-packages\pyinstaller-2.1-py2.7.egg\PyInstaller\loader\_pyi_bootstrap.py 1266 INFO: Processing hook hook-os 1282 INFO: Processing hook hook-site 1296 INFO: Processing hook hook-encodings 1391 INFO: Processing hook hook-time 1407 INFO: Processing hook hook-cPickle 1468 INFO: Processing hook hook-_sre 1578 INFO: Processing hook hook-cStringIO 1671 INFO: Processing hook hook-codecs 2016 INFO: Processing hook hook-httplib 2016 INFO: Processing hook hook-email 2109 INFO: Processing hook hook-email.message 2312 WARNING: library python%s%s required via ctypes not found 2468 INFO: Processing hook hook-pydoc 2516 INFO: Analyzing D:\Applications\Python\lib\site-packages\pyinstaller-2.1-py2.7.egg\PyInstaller\loader\pyi_importers.py 2609 INFO: Analyzing D:\Applications\Python\lib\site-packages\pyinstaller-2.1-py2.7.egg\PyInstaller\loader\pyi_archive.py 2687 INFO: Analyzing D:\Applications\Python\lib\site-packages\pyinstaller-2.1-py2.7.egg\PyInstaller\loader\pyi_carchive.py 2782 INFO: Analyzing D:\Applications\Python\lib\site-packages\pyinstaller-2.1-py2.7.egg\PyInstaller\loader\pyi_os_path.py 2782 INFO: Analyzing b.py 2796 INFO: Processing hook hook-PySide 2875 INFO: Hidden import 'codecs' has been found otherwise 2875 INFO: Hidden import 'encodings' has been found otherwise 2875 INFO: Looking for run-time hooks 7766 INFO: Using Python library C:\WINDOWS\system32\python27.dll 7796 INFO: E:\true\wuk\app2\build\b\out00-Analysis.toc no change! 7796 INFO: checking PYZ 7812 INFO: checking PKG 7812 INFO: building because E:\true\wuk\app2\build\b\b.exe.manifest changed 7812 INFO: building PKG (CArchive) out00-PKG.pkg 7828 INFO: checking EXE 7843 INFO: rebuilding out00-EXE.toc because pkg is more recent 7843 INFO: building EXE from out00-EXE.toc 7843 INFO: Appending archive to EXE E:\true\wuk\app2\build\b\b.exe 7843 INFO: checking COLLECT 7843 INFO: building COLLECT out00-COLLECT.toc Use pyinstaller browser.py, and in the console window i got QFont::setPixelSize: Pixel size <= 0 (0) QSslSocket: cannot call unresolved function SSLv23_client_method QSslSocket: cannot call unresolved function SSL_CTX_new QSslSocket: cannot call unresolved function SSL_library_init QSslSocket: cannot call unresolved function ERR_get_error QSslSocket: cannot call unresolved function SSLv23_client_method QSslSocket: cannot call unresolved function SSL_CTX_new QSslSocket: cannot call unresolved function SSL_library_init QSslSocket: cannot call unresolved function ERR_get_error QSslSocket: cannot call unresolved function SSLv23_client_method QSslSocket: cannot call unresolved function SSL_CTX_new QSslSocket: cannot call unresolved function SSL_library_init QSslSocket: cannot call unresolved function ERR_get_error QSslSocket: cannot call unresolved function SSLv23_client_method QSslSocket: cannot call unresolved function SSL_CTX_new QSslSocket: cannot call unresolved function SSL_library_init QSslSocket: cannot call unresolved function ERR_get_error QFont::setPixelSize: Pixel size <= 0 (0)

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  • One-to-one Mapping issue with NHibernate/Fluent: Foreign Key not updateing

    - by Trevor
    Summary: Parent and Child class. One to one relationship between the Parent and Child. Parent has a FK property which references the primary key of the Child. Code as follows: public class NHTestParent { public virtual Guid NHTestParentId { get; set; } public virtual Guid ChildId { get { return ChildRef.NHTestChildId; } set { } } public virtual string ParentName { get; set; } protected NHTestChild _childRef; public virtual NHTestChild ChildRef { get { if (_childRef == null) _childRef = new NHTestChild(); return _childRef; } set { _childRef = value; } } } public class NHTestChild { public virtual Guid NHTestChildId { get; set; } public virtual string ChildName { get; set; } } With the following Fluent mappings: Parent Mapping Id(x => x.NHTestParentId); Map(x => x.ParentName); Map(x => x.ChildId); References(x => x.ChildRef, "ChildId").Cascade.All(); Child Mapping: Id(x => x.NHTestChildId); Map(x => x.ChildName); If I do something like (pseudo code) ... HTestParent parent = new NHTestParent(); parent.ParentName = "Parent 1"; parent.ChildRef.ChildName = "Child 1"; nhibernateSession.SaveOrUpdate(aParent); Commit; ... I get an error: "Invalid index 3 for this SqlParameterCollection with Count=3" If I change the parent 'References' line as follows (i.e. provide the name of the child property I'm pointing at): References(x => x.ChildRef, "ChildId").PropertyRef("NHTestChildId").Cascade.All(); I get the error: "Unable to resolve property: NHTestChildId" So, I tried the 'HasOne()' reference setting, as follows: HasOne<NHTestChild>(x => x.ChildRef).ForeignKey("ChildId").Cascade.All().Fetch.Join(); This results in the save working, but the load fails to find the child. If I inspect the SQL Nhibernate produces I can see that NHibernate is assuming the Primary key of the parent is the link to the child (i.e. load join condition is "parent.NHTestParentId = child.NHTestChildId). The 'ForeignKey' specified appears to be ignored. I can set any value and no error occurs - the join just always fails and no child is returned. I've tried a number of slight variations on the above. It seems like it should be a simple thing to achieve. Any ideas?

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  • Automatically extracting inline XSD from WSDL into XSD file(s)

    - by Steven Geens
    I am using a third party Web Service whose definition and implementation are beyond my control. This web service will change in the future. The Web Service should be used to generate an XML file which contains some of the same data (represented by the same XSD types) as the Web Service plus some extra information generated by the program. My approach: create my own XSD referring to the XSD definitions of the WSDL of the called web service (This XSD also includes XSD types for the extra information obviously.) use a Java XML databinding framework (like ADB or JiXB) to generate the databinding classes from my own XSD file from step 1 use a Java SOAP framework (like Axis2 or CXF) with the same databinding framework to generate the databinding classes from the WSDL (This would enable me to use the objects retrieved by the web service directly in the generation of the XML.) The XSD types I am going to use in my own XSD file, but are defined in the WSDL, are subject to change. Whenever they change, I would like to automatically process the XSD and WSDL databinding again. (If the change is significant enough, this might trigger some development effort.(But usually not.)) My problem: In step 1 I need an XSD referring to the same types as used by the Web Service. The WSDL is referring to another WSDL, which is referring to another WSDL etc. Eventually there is an WSDL with the needed inline XSD types. As far as I know there is no way to directly reference the inline XSD types of a WSDL from an XSD. The approach I would think most viable, is to include an extra step in the automatic processing (before the databinding) that extracts the inline XSD from the WSDL into other XSD file(s). These other XSD file(s) can then be referred to by my own XSD file. Things I'd like to avoid: Manually copy pasting the inline XSD into an XSD file (I am looking for an automatic process.) Any manual steps.(Like the determining the WSDL that contains the inline types manually.(The location of that WSDL does change as well.)) Using xsd:any in my own XSD. I would like my own XSD file to be correct. Using a non-Java technology(like .NET) Huge amounts of implementation (but hints on how you would implement such an extraction are welcome anyway) PS: I found some similar questions, but they all had responses like: WTH would you want to do that? That is the reason for my rather large background story.

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  • Why is drawing to OnPaint graphics faster than image graphics?

    - by Tesserex
    I'm looking for a way to speed up the drawing of my game engine, which is currently the significant bottleneck, and is causing slowdowns. I'm on the verge of converting it over to XNA, but I just noticed something. Say I have a small image that I've loaded. Image img = Image.FromFile("mypict.png"); We have a picturebox on the screen we want to draw on. So we have a handler. pictureBox1.Paint += new PaintEventHandler(pictureBox1_Paint); I want our loaded image to be tiled on the picturebox (this is for a game, after all). Why on earth is this code: void pictureBox1_Paint(object sender, PaintEventArgs e) { for (int y = 0; y < 16; y++) for (int x = 0; x < 16; x++) e.Graphics.DrawImage(image, x * 16, y * 16, 16, 16); } over 25 TIMES FASTER than this code: Image buff = new Bitmap(256, 256, PixelFormat.Format32bppPArgb); // actually a form member void pictureBox1_Paint(object sender, PaintEventArgs e) { using (Graphics g = Graphics.FromImage(buff)) { for (int y = 0; y < 16; y++) for (int x = 0; x < 16; x++) g.DrawImage(image, x * 16, y * 16, 16, 16); } e.Graphics.DrawImage(buff, 0, 0, 256, 256); } To eliminate the obvious, I've tried commenting out the last e.Graphics.DrawImage (which means I don't see anything, but it gets rid a call that isn't in the first example). I've also left in the using block (needlessly) in the first example, but it's still just as blazingly fast. I've set properties of g to match e.Graphics - things like InterpolationMode, CompositingQuality, etc, but nothing I do bridges this incredible gap in performance. I can't find any difference between the two Graphics objects. What gives? My test with a System.Diagnostics.Stopwatch says that the first code snippet runs at about 7100 fps, while the second runs at a measly 280 fps. My reference image is VS2010ImageLibrary\Objects\png_format\WinVista\SecurityLock.png, which is 48x48 px, and which I modified to be 72 dpi instead of 96, but those made no difference either.

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  • How to track deleted self-tracking entities in ObservableCollection without memory leaks

    - by Yannick M.
    In our multi-tier business application we have ObservableCollections of Self-Tracking Entities that are returned from service calls. The idea is we want to be able to get entities, add, update and remove them from the collection client side, and then send these changes to the server side, where they will be persisted to the database. Self-Tracking Entities, as their name might suggest, track their state themselves. When a new STE is created, it has the Added state, when you modify a property, it sets the Modified state, it can also have Deleted state but this state is not set when the entity is removed from an ObservableCollection (obviously). If you want this behavior you need to code it yourself. In my current implementation, when an entity is removed from the ObservableCollection, I keep it in a shadow collection, so that when the ObservableCollection is sent back to the server, I can send the deleted items along, so Entity Framework knows to delete them. Something along the lines of: protected IDictionary<int, IList> DeletedCollections = new Dictionary<int, IList>(); protected void SubscribeDeletionHandler<TEntity>(ObservableCollection<TEntity> collection) { var deletedEntities = new List<TEntity>(); DeletedCollections[collection.GetHashCode()] = deletedEntities; collection.CollectionChanged += (o, a) => { if (a.OldItems != null) { deletedEntities.AddRange(a.OldItems.Cast<TEntity>()); } }; } Now if the user decides to save his changes to the server, I can get the list of removed items, and send them along: ObservableCollection<Customer> customers = MyServiceProxy.GetCustomers(); customers.RemoveAt(0); MyServiceProxy.UpdateCustomers(customers); At this point the UpdateCustomers method will verify my shadow collection if any items were removed, and send them along to the server side. This approach works fine, until you start to think about the life-cycle these shadow collections. Basically, when the ObservableCollection is garbage collected there is no way of knowing that we need to remove the shadow collection from our dictionary. I came up with some complicated solution that basically does manual memory management in this case. I keep a WeakReference to the ObservableCollection and every few seconds I check to see if the reference is inactive, in which case I remove the shadow collection. But this seems like a terrible solution... I hope the collective genius of StackOverflow can shed light on a better solution. Thanks!

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  • List of freely available programming books

    - by Karan Bhangui
    I'm trying to amass a list of programming books with opensource licenses, like Creative Commons, GPL, etc. The books can be about a particular programming language or about computers in general. Hoping you guys could help: Languages BASH Advanced Bash-Scripting Guide (An in-depth exploration of the art of shell scripting) C The C book C++ Thinking in C++ C++ Annotations How to Think Like a Computer Scientist C# .NET Book Zero: What the C or C++ Programmer Needs to Know About C# and the .NET Framework Illustrated C# 2008 (Dead Link) Data Structures and Algorithms with Object-Oriented Design Patterns in C# Threading in C# Common Lisp Practical Common Lisp On Lisp Java Thinking in Java How to Think Like a Computer Scientist Java Thin-Client Programming JavaScript Eloquent JavaScript Haskell Real world Haskell Learn You a Haskell for Great Good! Objective-C The Objective-C Programming Language Perl Extreme Perl (license not specified - home page is saying "freely available") The Mason Book (Open Publication License) Practical mod_perl (CreativeCommons Attribution Share-Alike License) Higher-Order Perl Learning Perl the Hard Way PHP Practical PHP Programming Zend Framework: Survive the Deep End PowerShell Mastering PowerShell Prolog Building Expert Systems in Prolog Adventure in Prolog Prolog Programming A First Course Logic, Programming and Prolog (2ed) Introduction to Prolog for Mathematicians Learn Prolog Now! Natural Language Processing Techniques in Prolog Python Dive Into Python Dive Into Python 3 How to Think Like a Computer Scientist A Byte of Python Python for Fun Invent Your Own Computer Games With Python Ruby Why's (Poignant) Guide to Ruby Programming Ruby - The Pragmatic Programmer's Guide Mr. Neighborly's Humble Little Ruby Book SQL Practical PostgreSQL x86 assembly Paul Carter's tutorial Lua Programming In Lua (for v5 but still largely relevant) Algorithms and Data Structures Algorithms Data Structures and Algorithms with Object-Oriented Design Patterns in Java Planning Algorithms Frameworks/Projects The Django Book The Pylons Book Introduction to Design Patterns in C++ with Qt 4 (Open Publication License) Version control The SVN Book Mercurial: The Definitive Guide Pro Git UNIX / Linux The Art of Unix Programming Linux Device Drivers, Third Edition Others Structure and Interpretation of Computer Programs The Little Book of Semaphores Mathematical Logic - an Introduction An Introduction to the Theory of Computation Developers Developers Developers Developers Linkers and loaders Beej's Guide to Network Programming Maven: The Definitive Guide I will expand on this list as I get comments or when I think of more :D Related: Programming texts and reference material for my Kindle What are some good free programming books? Can anyone recommend a free software engineering book? Edit: Oh I didn't notice the community wiki feature. Feel free to edit your suggestions right in!

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  • adobe flash buider (flex4): Error #2025 or Error: addChild() is not available in this class. Instead

    - by user306584
    Hi, I'm a complete newbie to Flex, so apologies for my dumbness. I've searched for an answer but haven't found anything that seems to be doing the trick. What I'm trying to do: port this example http://www.adobe.com/devnet/air/flex/articles/flex_air_codebase_print.html to Flash Builder 4. All seems to be fine but for one thing. When I use the original code for the Air application <?xml version="1.0" encoding="utf-8"?> <s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" creationComplete="onApplicationComplete()"> <fx:Script> <![CDATA[ private static const neededForCompilation:AirGeneralImplementation = null; private function onApplicationComplete():void { var can:MainCanvas = new MainCanvas(); this.addChild(can); can.labelMessage = "Loaded in an AIR Application "; } ]]> </fx:Script> <fx:Declarations> <!-- Place non-visual elements (e.g., services, value objects) here --> </fx:Declarations> </s:WindowedApplication> I get this run time error Error: addChild() is not available in this class. Instead, use addElement() or modify the skin, if you have one. at spark.components.supportClasses::SkinnableComponent/addChild()[E:\dev\4.0.0\frameworks\projects\spark\src\spark\components\supportClasses\SkinnableComponent.as:1038] If I substitute the code with this.addElement(can); Everything loads well but the first time I try to press any of the buttons on the main canvas I get the following run time error ArgumentError: Error #2025: The supplied DisplayObject must be a child of the caller. at flash.display::DisplayObjectContainer/getChildIndex() at mx.managers::SystemManager/getChildIndex()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\managers\SystemManager.as:1665] at mx.managers.systemClasses::ActiveWindowManager/mouseDownHandler()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\managers\systemClasses\ActiveWindowManager.as:437] here's the super simple code for the main canvas <?xml version="1.0" encoding="utf-8"?> <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600" creationComplete="init();"> <fx:Declarations> <!-- Place non-visual elements (e.g., services, value objects) here --> </fx:Declarations> <fx:Script source="main.as" /> <mx:Label id="lblMessage" text="The UI from the shared Flex app BothCode" x="433" y="112"/> <s:Button x="433" y="141" click="saveFile();" label="Save File"/> <s:Button x="601" y="141" click="GeneralFactory.getGeneralInstance().airOnlyFunctionality();" label="Air Only"/> </s:Application> Any help would be immensely appreciated. And any pointers to how to setup a project that can compile in both Air and Flash while sharing the same code, all for Flex 4, would also be immensely appreciated. thank you!

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  • How can I force a tree itemrenderer to redraw during a drag and drop operation?

    - by swidnikk
    I have a tree control with a custom item renderer. The item renderer has different states that should be set while an item is being dragged over the item renderer. I understand from reading this post http://forums.adobe.com/message/2091088 that the 'right way' to do this is to override the 'getCurrentState' method and append some text. I do that. Now in my tree control I handle the drag over event and get a reference to the itemrenderer that is being dragged over and I set the boolean 'dragOver' property to true. Now I just need to force my itemRenderer to redraw. I can't figure that out. A workaround, is to just set the currentState of the itemRenderer. My question then, how can I force my itemRenderer to refresh? (and I've tried calling validateNow, invalideDisplayList/Properties/Size, to no avail) <?xml version="1.0" encoding="utf-8"?> <s:MXTreeItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx"> <fx:Script> <![CDATA[ import mx.events.DragEvent; import mx.events.FlexEvent; import spark.layouts.supportClasses.DropLocation; public var dragOver:Boolean = false; override protected function getCurrentRendererState():String { var skinState:String = super.getCurrentRendererState(); if( dragOver ) skinState += "AndDragOver"; trace('getCurrentRendererState', skinState); return skinState; } ]]> </fx:Script> <s:states> <s:State name="normal" /> <s:State name="hovered" /> <s:State name="selected" /> <s:State name="normalAndDragOver" stateGroups="dragOverGroup" /> <s:State name="hoveredAndDragOver" stateGroups="dragOverGroup" /> <s:State name="selectedAndDragOver" stateGroups="dragOverGroup" /> </s:states> ...

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  • Building the DropThings ASP.NET Solution

    - by Sephrial
    Hi all, I'm attempting to build a project called DropThings but I am getting all these errors and I'm not sure how to resolve them. Can anyone lend a helping hand? I'm wondering if anyone else can build the website and if so, what steps it took you. Thanks in advance! Source Code: http://code.google.com/p/dropthings/ My Configuration: Visual Studio 2008 SP1 SQL 2005 (with the database loaded + Web.Config file configured) Microsoft Silverlight Projects 2008 Errors: Error File Metadata file '...\Dropthings-v2.2.0\src\DashboardDataAccess\bin\Debug\Dropthings.DataAccess.dll' could not be found. ...\Dropthings-v2.2.0\src\DashboardBusiness Build failed due to validation errors in ...\Dropthings-v2.2.0\src\DashboardDataAccess\DropthingsDataContext.dbml. Open the file and resolve the issues in the Error List, then try rebuilding the project. ...\Dropthings-v2.2.0\src\DashboardDataAccess\DropthingsDataContext.dbml Metadata file '...\Dropthings-v2.2.0\src\DashboardBusiness\bin\Debug\Dropthings.Business.dll' could not be found. ...\Dropthings-v2.2.0\src\Dropthings.Business.Activities Metadata file '...\Dropthings-v2.2.0\src\DashboardDataAccess\bin\Debug\Dropthings.DataAccess.dll' could not be found. ...\Dropthings-v2.2.0\src\Dropthings.Business.Activities Metadata file '...\Dropthings-v2.2.0\src\Dropthings.Business.Activities\bin\Debug\Dropthings.Business.Activities.dll' could not be found. ...\Dropthings-v2.2.0\src\Dropthings.Business.Workflows Metadata file '...\Dropthings-v2.2.0\src\DashboardBusiness\bin\Debug\Dropthings.Business.dll' could not be found. ...\Dropthings-v2.2.0\src\Dropthings.Business.Workflows Metadata file '...\Dropthings-v2.2.0\src\DashboardDataAccess\bin\Debug\Dropthings.DataAccess.dll' could not be found. ...\Dropthings-v2.2.0\src\Dropthings.Business.Workflows Metadata file '...\Dropthings-v2.2.0\src\DashboardDataAccess\bin\Debug\Dropthings.DataAccess.dll' could not be found Dropthings.Widget.Framework Metadata file '...\Dropthings-v2.2.0\src\DashboardBusiness\bin\Debug\Dropthings.Business.dll' could not be found. ...\Dropthings-v2.2.0\src\Dropthings.Business.Facade Metadata file '...\Dropthings-v2.2.0\src\DashboardDataAccess\bin\Debug\Dropthings.DataAccess.dll' could not be found. ...\Dropthings-v2.2.0\src\Dropthings.Business.Facade Metadata file '...\Dropthings-v2.2.0\src\DashboardDataAccess\bin\Debug\Dropthings.DataAccess.dll' could not be found Dropthings.Web.Framework Metadata file '...\Dropthings-v2.2.0\src\Dropthings.Business.Workflows\bin\Debug\Dropthings.Business.Workflows.dll' could not be found Dropthings.Web.Framework Metadata file '...\Dropthings-v2.2.0\src\Dropthings.Business.Activities\bin\Debug\Dropthings.Business.Activities.dll' could not be found Dropthings.Web.Framework Metadata file '...\Dropthings-v2.2.0\src\Dropthings.Widget.Framework\bin\Debug\Dropthings.Widget.Framework.dll' could not be found Dropthings.Web.Framework Metadata file '...\Dropthings-v2.2.0\src\Dropthings.Business.Facade\bin\Debug\Dropthings.Business.Facade.dll' could not be found Dropthings.Web.Framework Metadata file '...\Dropthings-v2.2.0\src\DashboardBusiness\bin\Debug\Dropthings.Business.dll' could not be found Dropthings.Web.Framework The type or namespace name 'Framework' does not exist in the namespace 'Dropthings.Web' (are you missing an assembly reference?) ...\Dropthings-v2.2.0\src\Dropthings\web.config

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  • HELP: MS Virtual Disk Service to Access Volumes and Discs on Local Machine.

    - by Jibran Ahmed
    Hi, here it is my code through which I am successfully initialize the VDS service and get the Packs but When I call QueryVolumes on IVdsPack Object, I am able to get IEnumVdsObjects but unable to get IUnknown* array through IEnumVdsObject::Next method, it reutrns S_FALSE with IUnkown* = NULL. So this IUnknown* cant be used to QueryInterface for IVdsVolume Below is my code HRESULT hResult; IVdsService* pService = NULL; IVdsServiceLoader *pLoader = NULL; //Launch the VDS Service hResult = CoInitialize(NULL); if( SUCCEEDED(hResult) ) { hResult = CoCreateInstance( CLSID_VdsLoader, NULL, CLSCTX_LOCAL_SERVER, IID_IVdsServiceLoader, (void**) &pLoader ); //if succeeded load VDS on local machine if( SUCCEEDED(hResult) ) pLoader->LoadService(NULL, &pService); //Done with Loader now release VDS Loader interface _SafeRelease(pLoader); if( SUCCEEDED(hResult) ) { hResult = pService->WaitForServiceReady(); if ( SUCCEEDED(hResult) ) { AfxMessageBox(L"VDS Service Loaded"); IEnumVdsObject* pEnumVdsObject = NULL; hResult = pService->QueryProviders(VDS_QUERY_SOFTWARE_PROVIDERS, &pEnumVdsObject); IUnknown* ppObjUnk ; IVdsSwProvider* pVdsSwProvider = NULL; IVdsPack* pVdsPack = NULL; IVdsVolume* pVdsVolume = NULL; ULONG ulFetched = 0; hResult = E_INVALIDARG; while(!SUCCEEDED(hResult)) { hResult = pEnumVdsObject->Next(1, &ppObjUnk, &ulFetched); hResult = ppObjUnk->QueryInterface(IID_IVdsSwProvider, (void**)&pVdsSwProvider); if(!SUCCEEDED(hResult)) _SafeRelease(ppObjUnk); } _SafeRelease(pEnumVdsObject); _SafeRelease(ppObjUnk); hResult = pVdsSwProvider->QueryPacks(&pEnumVdsObject); hResult = E_INVALIDARG; while(!SUCCEEDED(hResult)) { hResult = pEnumVdsObject->Next(1, &ppObjUnk, &ulFetched); hResult = ppObjUnk->QueryInterface(IID_IVdsPack, (void**)&pVdsPack); if(!SUCCEEDED(hResult)) _SafeRelease(ppObjUnk); } _SafeRelease(pEnumVdsObject); _SafeRelease(ppObjUnk); hResult = pVdsPack->QueryVolumes(&pEnumVdsObject); pEnumVdsObject->Reset(); hResult = E_INVALIDARG; ulFetched = 0; BOOL bDone = FALSE; while(!SUCCEEDED(hResult)) { hResult = pEnumVdsObject->Next(1, &ppObjUnk, &ulFetched); //hResult = ppObjUnk->QueryInterface(IID_IVdsVolume, (void**)&pVdsVolume); if(!SUCCEEDED(hResult)) _SafeRelease(ppObjUnk); } _SafeRelease(pEnumVdsObject); _SafeRelease(ppObjUnk); _SafeRelease(pVdsPack); _SafeRelease(pVdsSwProvider); // hResult = pVdsVolume-AddAccessPath(TEXT("G:\")); if(SUCCEEDED(hResult)) AfxMessageBox(L"Add Access Path Successfully"); else AfxMessageBox(L"Unable to Add access path"); //UUID of IVdsVolumeMF {EE2D5DED-6236-4169-931D-B9778CE03DC6} static const GUID GUID_IVdsVolumeMF = {0xEE2D5DED, 0x6236, 4169,{0x93, 0x1D, 0xB9, 0x77, 0x8C, 0xE0, 0x3D, 0XC6} }; hResult = pService->GetObject(GUID_IVdsVolumeMF, VDS_OT_VOLUME, &ppObjUnk); if(hResult == VDS_E_OBJECT_NOT_FOUND) AfxMessageBox(L"Object Not found"); if(hResult == VDS_E_INITIALIZED_FAILED) AfxMessageBox(L"Initialization failed"); // pVdsVolume = reinterpret_cast(ppObjUnk); if(SUCCEEDED(hResult)) { // hResult = pVdsVolume-AddAccessPath(TEXT("G:\")); if(SUCCEEDED(hResult)) { IVdsAsync* ppVdsSync; AfxMessageBox(L"Formatting is about to Start......"); // hResult = pVdsVolume-Format(VDS_FST_UDF, TEXT("UDF_FORMAT_TEST"), 2048, TRUE, FALSE, FALSE, &ppVdsSync); if(SUCCEEDED(hResult)) AfxMessageBox(L"Formatting Started......."); else AfxMessageBox(L"Formatting Failed"); } else AfxMessageBox(L"Unable to Add Access Path"); } _SafeRelease(pVdsVolume); } else { AfxMessageBox(L"VDS Service Cannot be Loaded"); } } } _SafeRelease(pService);

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  • CGContextDrawPDFPage doesn't seem to persist in CGContext

    - by erichf
    I am trying to access the pixels of a CGContext written to with a PDF, but the bitmap buffer doesn't seem to update. Any help would be appreciated: //Get the reference to our current page pageRef = CGPDFDocumentGetPage(docRef, iCurrentPage); //Start with a media crop, but see if we can shrink to smaller crop CGRect pdfRect1 = CGRectIntegral(CGPDFPageGetBoxRect(pageRef, kCGPDFMediaBox)); CGRect r1 = CGRectIntegral(CGPDFPageGetBoxRect(pageRef, kCGPDFCropBox)); if (!CGRectIsEmpty(r1)) pdfRect1 = r1; int wide = pdfRect1.size.width + pdfRect1.origin.x; int high = pdfRect1.size.height + pdfRect1.origin.y; CGContextRef ctxBuffer = NULL; CGColorSpaceRef colorSpace; UInt8* bitmapData; int bitmapByteCount; int bitmapBytesPerRow; bitmapBytesPerRow = (wide * 4); bitmapByteCount = (bitmapBytesPerRow * high); colorSpace = CGColorSpaceCreateDeviceRGB(); bitmapData = malloc( bitmapByteCount ); if (bitmapData == NULL) { DebugLog (@"Memory not allocated!"); return; } ctxBuffer = CGBitmapContextCreate (bitmapData, wide, high, 8, // bits per component bitmapBytesPerRow, colorSpace, kCGImageAlphaPremultipliedLast | kCGBitmapByteOrder32Big); // if (ctxBuffer== NULL) { free (bitmapData); DebugLog (@"Context not created!"); return; } CGColorSpaceRelease( colorSpace ); //White out the current context CGContextSetRGBFillColor(ctxBuffer, 1.0, 1.0, 1.0, 1.0); CGContextFillRect(ctxBuffer, CGContextGetClipBoundingBox(ctxBuffer)); CGContextDrawPDFPage(ctxBuffer, pageRef); //!!!This displays just fine to the context passed in from - (void)drawLayer:(CALayer *)layer inContext:(CGContextRef)ctx. That is, I can see the PDf page rendered, so we know ctxBuffer was created correctly //However, if I view bitmapData in memory, it only shows as 0xFF (or whatever fill color I use) CGImageRef img = CGBitmapContextCreateImage(ctxBuffer); CGContextDrawImage(ctx, tiledLayer.frame, img); void *data = CGBitmapContextGetData (ctx); for (int i = 0; i < wide; i++) { for (int j = 0; j < high; j++) { //All of the bytes show as 0xFF (or whatever fill color I test with)?! int byteIndex = (j * 4) + i * 4; UInt8 red = bitmapData[byteIndex]; UInt8 green = bitmapData[byteIndex + 1]; UInt8 blue = bitmapData[byteIndex + 2]; UInt8 alpha = m_PixelBuf[byteIndex + 3]; } } I have also tried using CGDataProviderCopyData(CGImageGetDataProvider(img)) & CFDataGetBytePtr, but the results are the same?

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  • Update Panel error: Control with the ID "xxx" could not be found in the UpdatePanel

    - by George
    I have a composite drop down calendar user control that consists of a textbox and and calendar image and a validation control. I expose a property called "TextBox" on the usercontrol which returns a reference to the textbox used within the control. This is the textbox that the user enters the date into. In the ASPX page, I have an instance of this usercontrol: <uc1:DropDownCalendar ID="dtmDateFirstEntry" runat="server" Required="True" /> In my code behind, I want to detect when a user has tabbed off of the textbox and, using an UpdatePanel, referesh an appropriate message depending on the date that was specified. Elsewhere in the ASPX page I have this: <asp:UpdatePanel ID="upIntendedStay" runat="server"> <ContentTemplate> <asp:Label ID="Label4" runat="server" Text="Update this text from server" CssClass="ErrorText"></asp:Label> </ContentTemplate> </asp:UpdatePanel> Here's what I do in the code behind: If Not Me.IsPostBack Then dtmDateFirstEntry.TextBox.AutoPostBack = True Dim trigger As New AsyncPostBackTrigger trigger.ControlID = dtmDateFirstEntry.TextBox.ClientID trigger.EventName = "onChange" upIntendedStay.Triggers.Add(trigger) End If When the page runs and I view the source, I see something like this: <input id="ctl00_phPageContent_dtmDateFirstEntry_txtDate" class="DefaultTextBox" name="ctl00$phPageContent$dtmDateFirstEntry$txtDate" onchange="javascript:setTimeout('__doPostBack(\'ctl00$phPageContent$dtmDateFirstEntry$txtDate\',\'\')', 0)" onkeypress="if (WebForm_TextBoxKeyHandler(event) == false) return false;" style="width: 112px;" type="text" value="Mar-29-2010" /> <input id="ctl00_phPageContent_dtmDateFirstEntry_imgDate" name="ctl00$phPageContent$dtmDateFirstEntry$imgDate" src="images/calendar.JPG" style="border-width: 0px;" type="image" />&nbsp; When I run it, I get this error: A control with ID 'ctl00_phPageContent_dtmDateFirstEntry_txtDate' could not be found for the trigger in UpdatePanel 'upIntendedStay'. I didn't think that the trigger control had to be within the UpdatePanel. I thought that was the whole point of adding the trigger. How do I refresh this update panel changes to the text in the date usercontrol. Next I will have to add other triggers to trigger the refreshing of the Update Panel from other controls scattered across the page, so clearly all of the trigger sources cannot be within the UpdatePanel.

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